diff -r e628fc2e0c72 -r 03f8e6d42e13 src/ui/objecteditor.cpp
--- a/src/ui/objecteditor.cpp	Thu Mar 03 21:13:16 2022 +0200
+++ b/src/ui/objecteditor.cpp	Fri Mar 04 11:37:50 2022 +0200
@@ -1,9 +1,10 @@
 #include <QVBoxLayout>
 #include "objecteditor.h"
+#include "document.h"
 
-ObjectEditor::ObjectEditor(Model* model, const ldraw::id_t id, QWidget *parent) :
-	QWidget{parent},
-	model{model}
+ObjectEditor::ObjectEditor(Document* document, const ldraw::id_t id) :
+	QWidget{document},
+	document{document}
 {
 	this->setObjectId(id);
 	this->setLayout(new QVBoxLayout{this});
@@ -12,12 +13,12 @@
 void ObjectEditor::setObjectId(const ldraw::id_t id)
 {
 	this->objectId = id;
-	const ldraw::Object* object = this->model->get(id);
+	const ldraw::Object* object = this->document->getModel().get(id);
 	if (object != nullptr and object->numPoints() > 0)
 	{
 		if (not this->polygonEditor.has_value())
 		{
-			this->polygonEditor.emplace(this->model, id);
+			this->polygonEditor.emplace(this->document, id);
 			this->layout()->addWidget(&*this->polygonEditor);
 		}
 		else